How to fix the Oracle error ORA-09955: scgcan: unexpected return status when canceling a lock?

In this post, you’ll learn more about the Oracle ErrorORA-09955: scgcan: unexpected return status when canceling a lock with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-09955: scgcan: unexpected return status when canceling a lock

Reason for the Error ORA-09955: scgcan: unexpected return status when canceling a lock

DLM system service x returned an unexpected value

How to fix the Error ORA-09955: scgcan: unexpected return status when canceling a lock ?

You can fix this error in Oracle by following the below steps

Check for system error message and refer to DLM documentation refer to the distributed lock manager documentation or contact your customer support representative.